Cam position sensor replaced. Won't start.
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New User
Joined: Jul 2004
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Cam position sensor replaced. Won't start.
Tuesday replaced cps. Truck drove fine for 2 days. This morning it would not turn over. Towed to mechanic. Computer says it is the sensor. Anyone had this happen before? Is there anyway to actually test the sensor?
Last edited by TommyH; Jul 30, 2004 at 04:51 PM.
Senior User
Joined: Jun 2003
Posts: 201
Likes: 1
From: NC
??? possible defective sensor or wrong sensor.???
you have to compare the original sensor to new sensor for correct length. if it is too long you'll damage the sensor or if it is too short you'll experience hard starting.
either way, double check everything..wiring..sensor..etc..etc..
you have to compare the original sensor to new sensor for correct length. if it is too long you'll damage the sensor or if it is too short you'll experience hard starting.
either way, double check everything..wiring..sensor..etc..etc..
Senior User
Joined: Jun 2003
Posts: 201
Likes: 1
From: NC
Originally Posted by TommyH
Do these sensors have a history of being bad out of the box? Mechanic cleared the error and it turned over. What is up with that?
not really but if someone drop them, then it is possible.
Post Fiend
Joined: Aug 2002
Posts: 5,324
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From: Denton,TX
Originally Posted by International Tech
cam sensor will not cause a no start (crank) situation.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
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From: Rio Rico, AZ.
Originally Posted by International Tech
cam sensor will not cause a no start (crank) situation.
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Post Fiend
Joined: Aug 2002
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From: Denton,TX
Originally Posted by Kwikkordead
Wait, I'm confused here. I thought that a bad CMP would not let the engine run at all. Crank on the starter all day long and no start. Are you talking about the CMP not killing the starter?
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TommyH first off WELCOME to the forum. A little more info on the truck would be helpful, does it have a chip? If so make sure it is not loose, check fuse #22 under the hood, if the fuel heater came loose it could have blown the fuse which also controls the PCM. Does the tach move when the engine is turning over? If not you could have gotten a bad CMP.
Goto user CP in the header and fill out your signature with all the info on your truck it'll help in trying to diagnose problems.
John
Goto user CP in the header and fill out your signature with all the info on your truck it'll help in trying to diagnose problems.
John
Senior User
Joined: Jan 2003
Posts: 371
Likes: 0
From: West Columbia, SC
If you have a bad Cam sensor the engine will turn over but wont start. It will not cause a no start(crank) situation. Basically, if the engine will not turn over dont look at the cam sensor look somewhere else.
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